2024421(2024524)

This 2024421 (2024524) helical gear is a high-performance precision transmission component tailored for power tools, belonging to the helical gear category. Its core technical parameters are optimized for heavy-duty power transmission scenarios of power tools: pressure angle of 20°, module of 1.25, number of teeth of 51, helix angle of 20°/L, inner diameter of 14mm, addendum circle diameter of 69.5mm, total length of 10.5mm, and a unit weight of 0.1747kg. It features a compact size and high load-bearing capacity, which can effectively match the power output requirements of medium and high-power electric tools.

The gear is manufactured from 20CrMo alloy structural steel, a material with outstanding hardenability, toughness and wear resistance, capable of withstanding the high-torque and continuous operation conditions of power tools. The production process adheres to strict precision machining specifications with a well-designed workflow: normalizing pretreatment → turning → hobbing → heat treatment strengthening → shot blasting → boring + face flattening → full appearance inspection. Among these processes, heat treatment enhances the overall mechanical properties of the gear to resist impact and fatigue; shot blasting removes surface oxide scale and reduces stress concentration; the boring and face flattening process ensures the perpendicularity between the inner hole and the end face, improving the assembly coaxiality; the final full appearance inspection eliminates defective products, ensuring that each gear delivered meets the technical standards.